Water heater



r J. ELLIS WATER HEATER Aug 9,1927. 1,638,624

Filed March-11.- 1926 2 Sheets-Sheet 1 v 4 I l I V WITNESSES: v I INVI-QNTQR %,M" ZJ/ -Jb/m E/l/Is 4 ATTORNEY J. ELLIS Au 9, 1927. I 1,638,624

WATER HEATER F1196. March 11. 1926 2 Sheets-Sheet 2 WITN ESSES: INVENTOR av/W w/m m1; W M wMqmW-m ATTORNEY v water heaters, relating in particular-to theit be located simple in construction,

:In theaccompanying drawings, forming a part of this'specification, Ihave illustrated all Patented Aug. 9, I V

JOHN ELLIS, oF-wEsT VIEW,- :ennnsxrnfama- WATER. HEATER.

i Application filed March, .11, '192e.' Serial uaeaesv- I I My invention relates to improvements 1n so-called instantaneous automatic water heaters employing gas as the heating medium and having water motor and thermo'static control. p j l One object of my invention is to provide an operatmg mechanism for the abovetclass of 'heaters'that will permit a given supply of 7 hot water,,of full or partial volume, as desired, ,being delivered at the faucet, whether an elevation thereabove, such as at'the second or thirdfloorof a dwelling..

Another object .of'my invention isv to supply the'water at such elevations/at ia sub 'stantially like temperature whether the faucetbe fully opened or not and inv accordance to the temperature limit to whichthe thermostat beset. 1 v

Further objects of my invention are,.to provide control. mechanism [that will be of few parts, and that is not liable to. become inoperative. i

With' the above objects in*v'iew,' the invention consists" in certain novel features of construction, I in I certain parts and "combina tions' as will 'befhereinafter more fully .de-' scribed and particularly pointed outin the appended claims.

one embodiment of. my invention, wherein Figure" 1 1s as de elevation of a heater I having my improved operating mechanism applied thereto.

Fig.2 is a front elevation of a part 'of the mechanism taken'online Ill-II of Fig. 1.

' wFig. 3 isan'enlarged side elevationof the, p

' The Water inlet24 also communicates with 4 the main water chamber byrthe port v31,

valve mechanism. n J v 'Fig, 4is an end elevation of the secondary water-controlling'valve,'and T Fig. 5 is alongitudi al sectional view of said valve, f i

" description of the heater and-the operation thereof, the numeral 1 designates the heater 1 cured. to theiupperend' .of an open valve various supply faucets and the upper end of.

it tubular thermostat 5 are threadablyseatthe level of the heater or at Referring tothe drawings fora detailed" ing box 39 and supporting frame fixedfto the theater, rigldly held by nuts 6.- [Thejlower-end of.

the thermostatis connected to the lower por- 121011 of the heater coil. (not shown) ,by anon-f nector 8 and 1s adjustably. held within/the. '1 r '11,.FEEQb y frame by abridge piece9. The frame car-f ries at its lower end a loosely-'- fitted thrust pin 10'which engages the thermostat connection 8, saidframe being provided with" spaced downwardly-extended fiangesll and 12, respectively, each having an oppositely;

disposed groove 13, therein. l The flange :12

extends downbeyond-the other, but each are. I 'providedwith a lug '14 and 15, respectively,

one disposed'opposite the other, said lug 1 L I 15 supporting the gas [valve-2. JA'thermo- .supportmg the water motor 16 and the'lugj 20'thereon engaging inthe'fiange grooves '13. 2 The lever is provided, nearits point of suspension, with a shouldered ,portion.21 carry- 10, said screw being adapted to adjust the leverlto the desired temperature-operating position with respect to the thermostat:

aThemotor, or' gas and ;wate r,c0ntrol de-s vice 16,'.comprises a chamber casing 23pmshown). Within this casing is formed-the ma n or water motor chamber 28, closed at.

nectsthe upperend of the .heater coillnot V its;rear end by a vremovablehead' 29 and A communicating at that end withlthe cold water inlet 24 by a port. 30,; and. also'communicating with the cold water outlet 26.

valve opening 32, inlet chamber33, formed I in extension 34, and the port 35, there being."

also provided a small chamber 36 opening intothe port '31. Within the water motor,

chamber 28 is operatively fitted a piston 37 having a linewith the stem 41 of'the' gas valve 2.

stem 38 extending through a'stuifcap 4:0,"said stem being'in 16F The piston is normally held in engagement withthe extension 42 of the head 29-by a helical spring :43, said vpiston beingprovided with a normally-closed primary piston. valve 44:,Jheld in position by a spring 45 and pros lie Y vided iwith a suitable small port orf other- V waterpass'age (i6; Passage of: cold water ing a set screw 22, engaging thethrustpin: I

provided With a stem. 48lhaving head 49 thereon, the stem extending through'the' stufiing boX caps 50rand 50 and is surround- ;ed by a spring 51-to normally "hold and re:

" turn the valve. to its seat. The head of the valve stem isengaged by theforked end of a the therniostat lever' by Whieh means the alve. {is opened: The cylindrical valve member A? extends at. its. rear, through an opening-into the chamber 36 and has its forward end, or valveproper '52, enlarged and f provided Withatapered face to engage the correspondinglytapered seat aboutthe openingee, The valve 'member isireduced in 1 diameter between its ends," the shoulders formed thereby being of equal diameter 1 and area. Torts 53 are formed through "an'ex- 4 tensionat' the stem end of the'val've and opening into the interiorthereof, providing coimnun-ication between the cl 'amb'ers-33and I water therethrough, whereby (the-valvemaymovefreely. Y

361 to permit o f-the piston 37 is reduced, causing the pressure of the ilncomingscold -Wateron-th'e left I 1 side topredominate and movethe piston'to "the right against'the; tension of the spring 43. A-s thejpiston moves, the stem 38'1-en 7 gages it he sten'rof the gas valve and: opens V the valve to=tu1nonz-the'gas at the burner (not sho n), it being assumed thatthe' heater contains the ustialpilotlight for ig-j uniting the gas at the burner. jn'iov'ement the Fpiston. also causes the pri-V- mary piston valve 44 tofcome into engage-y ment vith the forward end Iotthe chamber,

as shown bydottedlines, compressing the" spring 45 thereof and permitting asma'll stream of 'Water".(much less the capacity of the heaterylto pass throughithe small port 46 thereof to the heater coil."

"Ilhc moment the heated \vate-rflbegins to moveathrough the thermostat 5 it gradually 'expands andactuateskthe lever 18= hich in .t-nrnmoves the secondary valve 1-70011-13101- ling the main water supplyfrom its seat and per-mits asupply-of Water to pass fr'om the' jco ldflrater intake 24 to the-rightside lot the "chamber-28 and into theheater. coil. As

the temperature of thewater in the coilinf creasesthethermostat continues, to operate and turther open the valve :47 .thussincreasing the supply of. Water to the coil 3 until the proper temperature at which} the thermostat 1s; set for" controlling: the incoming sold wateriis reachechithevalvees'i then remain;

ingifopenfo'r the-passage.=.ofa fixed quantity of'cold Water to "the heater and consequently heat "at the burners. 7 Water control valve: 4-7 returns to its seat by The forward ent of the piston,

a like quantity t hot ater at the faucet, oit-iixed temperature; r

-,When the faucet is closed, the water, plusthat of the piston spring, returns the piston tonormal position, thus alloniing the gas valve to close and cut on the At this time the cold the cooling of the thermostat; The secondary valve being provided with a shouldered portion, between'its piston and valve ends; the pressure of the Water'vvithinthe incom ing p'ort l againstsaid shoulders will be equalized, thus providing a' practically balanced-valve structure,

o When fivater is drawn from faucet,

either at the heater level or'an elevation therea bove, thus reducing the pressureof-the Water in the line from the'heater, it causes t the Water in the heater to become momen tarily increased 1 in temperature During such operation, the thermostat "mechanism automatically adjusts itSelf 'to ZmOVe the secondary inlet valve, permitting more cold Water tobe supplied to the heater, and thus. providing Water supply: of predetermined rtemperature and {desired capacity atthe H i V ffaucet. 1

5 I WVh e'n'a faucet inthezhot Water line 4' is i Q: 9' opene'cl,lthe ater pressure on the right side but partly .op'ene'dpthe sameaction as above occurs for :full .or practicallyfull capacity, except that the piston wiill'a'utomatically ad'- just itself backand for-tlrinorder toicontrol the gas'tothe' burner; HoWever, the itherino'stat- "mechanism Will; move only :tol and 7 remain stationary at a point 'vvhere the temmostat to operate t'heseeondar'y valve;

Having. shown and described one ment of my invention, What I claim is LQIn a Water heater,-the combinationlof a Water; 11101101 comprising a Water .acyl-inder therein, a primary Water .in'let'valve carried by the piston, a gas valve operated by said motor piston, a thermostat lever, a -thermo stat, and a main Water-inletvalve independadapted to admit a smallvquantity offwater to the heater when the gas valve is operated by the motor piston land wthemain" Water valveadapted to open to increase the quantity =.of watertoztheheater by movement of t'he'thermostat and .actuatedilever.' In'a'vvater heater, theicomb-inationiota Water motor comprising a water" cylinder having a, -movahle' piston sslidably rfit-ted therein, a. primary Waterinlet valvecarried bythe; piston, a igaslvalve operate-d by said motor piston; a thermostat.lever,v a ltllBTl'IlO When afaucet inthehot Water supply V the'pressure of cold 1' embodi p having a -movalole piston fslidably afitted as I the primary water valve stat, anda main Water inlet valve independ ent of the piston and having a ported sleeve body portion disposed in the direct Water passage .to the heater, the primary Water valve-adapted to admit a small quantity of .Water to the heater When-the gas valve is operated by the motor piston and the main Water valve adapted to open to inerease the quantity'of water to the heater by movement therein, a primary Water inlet valve carried by the piston, a gas valve operated. bysaid motor piston, a thermostat lever, a; thermo subscribed stat, and a main Water inlet valve-independent of the piston and having a sleeve body portion provided with both inlet andoutlet'v 1 ports and disposed in the direct Water pas sage to' the heater, the primary Water valve adapted to admit a small quanti y of Water to th -heater when the gas valve is operat d I by the motorpiston and the main water valve adapted to open'to increase the quantity of Water to the heater by movement of g the thermostat and aotuatedlever.

In testimony whereof, I have" hereunto my name this 5,,day of March, j

" f fJO'I IN- ELLIS, i 

